How true is that really? Maybe there will come a point where this is true, but there are still lots of things on Amazon that don't have next-day delivery. Many specialty items on Amazon have slow shipping, and I would gladly have bought them at a local store if I had the choice; I used to until they all closed.
But by the very nature of being a specialty item, there's unlikely to be a shop for that thing in any given area. Occasionally you luck out and it turns out you live near a major kitesurfing shop or whatever, but on average you're no better off than online - probably worse off if you actually make a day trip to a brick-and-mortar shop halfway across the country.
